<template>
  <div id="app">
    <!-- 面包屑 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <!-- 提示文案 -->
      <el-alert
        title="添加商品信息"
        type="info"
        show-icon
        center
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条区域 -->
      <el-steps
        :space="200"
        :active="+stepsActiveIndex"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- tab栏区域  -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          @tab-click="tabClicked"
          :before-leave="beforeTabLeave"
          :tab-position="'left'"
          v-model="stepsActiveIndex"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name" placeholder=""></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!-- 渲染表单的item项 -->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="sub"
                  v-for="(sub, index) in item.attr_vals"
                  :key="index"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="item in onlyTableDate"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals" placeholder=""></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action 表示图片要上传到的后台地址 -->
            <!-- on-preview点击预览图片触发的事件 -->
            <!-- on-remove点击X 触发的事件 -->
            <!-- header设置请求头 -->
            <!-- on-success图片上传成功调用的钩子 -->
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :headers="headerObj"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :on-success="handlsSuccess"
              list-type="picture"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器组件 -->
            <quill-editor v-model="addForm.good_introduce"></quill-editor>
            <el-button type="primary" @click="add" style="margin-top: 10px"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 预览图片的对话框   -->
    <el-dialog title="图片预览" :visible.sync="PreviewVisible" width="50%">
      <img :src="this.PreviewPath" alt="" class="PreviewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash';
export default {
  name: 'Add',
  data() {
    return {
      stepsActiveIndex: '0',
      // 添加商品的表单数据对象
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        // 图片的数组
        pice: [],
        // 商品详情描述
        good_introduce: '',
        attrs: [],
      },
      // 添加商品表单的校验规则
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' },
        ],
      },
      // 请求获取到的数据
      cateList: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      // 动态商品参数列表数据
      manyTableData: [],
      // 静态商品参数列表数据
      onlyTableDate: [],
      // 图片上传组件的headers请求头
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      PreviewPath: '',
      // 控制预览图片对话框的关系与隐藏
      PreviewVisible: false,
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    // 获取所有商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get('categories');
      if (res.meta.status !== 200) {
        this.$message.error('获取商品分类数据失败！');
      }
      this.cateList = res.data;
    },
    // 级联选择器选中变化触发的函数
    handleChange() {
      // console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    // el-tabs切换触发的函数
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类');
        return false;
      } else {
        return true;
      }
    },
    // 点击tab切换 触发的函数
    async tabClicked() {
      // console.log(this.stepsActiveIndex)
      // 证明访问的是商品参数面板
      if (this.stepsActiveIndex == '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'many',
            },
          }
        );
        if (res.meta.status !== 200) {
          this.$message.error('获取动态商品参数列表失败');
        } else {
          res.data.forEach(item => {
            item.attr_vals =
              item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ');
          });
          this.manyTableData = res.data;
          console.log(res.data, 'fffffffff');
        }
      } else if (this.stepsActiveIndex == '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'only',
            },
          }
        );
        if (res.meta.status !== 200) {
          this.$message.error('获取静态属性失败');
        } else {
          this.onlyTableDate = res.data;
          // console.log(res.data)
        }
      }
    },
    // 预览图片触发的事件
    handlePreview(file) {
      console.log(file);
      this.PreviewPath = file.response.data.url;
      this.PreviewVisible = true;
      console.log(this.VueQuillEditor);
    },
    // 处理移出图片的操作
    handleRemove(file) {
      const filePath = file.response.data.temp_path;
      const i = this.addForm.pics.findIndex(item => {
        if (item.pic === filePath) this.addForm.pics.splice(i, 1);
      });
    },
    // 监听图片上传成功调用的钩子
    handlsSuccess(response) {
      const picInfo = {
        pic: response.data.tmp_path,
      };
      this.addForm.pice.push(picInfo);
    },
    // 添加商品
    add() {
      this.$refs.addFormRef.validate(async item => {
        if (!item) {
          this.$message.error('请填写必要的表单项');
        } else {
          const form = _.cloneDeep(this.addForm);
          form.goods_cat = form.goods_cat.join(',');
          // 处理动态参数
          this.manyTableData.forEach(item => {
            const newInfo = {
              attr_id: item.attr_id,
              attr_value: item.attr_vals.join(' '),
            };
            this.addForm.attrs.push(newInfo);
          });
          // 处理静态属性
          this.onlyTableDate.forEach(item => {
            const newInfo = {
              attr_id: item.attr_id,
              attr_value: item.attr_vals,
            };
            this.addForm.attrs.push(newInfo);
          });
          form.attrs = this.addForm.attrs;

          // 发起请求、添加商品 商品的名称 必须是唯一的
          const { data: res } = await this.$http.post('goods', form);

          if (res.meta.status !== 200) {
            this.$message.error('添加商品失败');
          }
          console.log("ffffffffffffff")
          this.$message.success('添加商品成功');
          this.$router.push('/goods');
        }
      });
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      } else {
        return null;
      }
    },
  },
};
</script>

<style lang="less" scope>
.el-steps {
  margin: 15px 0;
}
.el-step__title {
  font-size: 13px !important;
}
.el-cascader {
  width: 300px;
}
.el-checkbox {
  margin: 0 5px 0 0 !important;
}
.PreviewImg {
  width: 100%;
}
.ql-editor {
  min-height: 300px;
}
</style>